CN107023373A - Engine cooling apparatus - Google Patents
Engine cooling apparatus Download PDFInfo
- Publication number
- CN107023373A CN107023373A CN201710060831.1A CN201710060831A CN107023373A CN 107023373 A CN107023373 A CN 107023373A CN 201710060831 A CN201710060831 A CN 201710060831A CN 107023373 A CN107023373 A CN 107023373A
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- Prior art keywords
- water
- water route
- cooling
- route
- engine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/04—Arrangements of liquid pipes or hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2037/00—Controlling
- F01P2037/02—Controlling starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of engine cooling apparatus, possesses：Mechanical water pump with suction inlet and N number of (N is more than 2 integer) ejiction opening；It is arranged in engine and N number of water jacket corresponding with each of N number of ejiction opening respectively；N number of link water route that N number of ejiction opening is linked with corresponding water jacket respectively；Make each and the backflow water route flowed back to suction inlet of cooling water collaborated in merging part by N number of water jacket；The water shut-down mechanism of the backflow cut-off of the cooling water in backflow water route will have been passed through；And make that N number of link water route is respectively communicated with not via N number of water sleeve water shut-down mechanism with suction inlet N number of connect water route.
Description
Technical field
This disclosure relates to engine cooling apparatus.
Background technology
It is known to there are Japanese Unexamined Patent Publication 2013-234605 publications to record such engine cooling apparatus.The publication starts
Machine cooling device possesses：Make the chilled(cooling) water return (CWR) of cooling water circulation by water jacket；The water pump of cooling water is sprayed to water jacket；It will pass through
The water shut-down mechanism of the backflow cut-off to water pump of the cooling water of water jacket.Also, pre- in engine is hankered, and is stopped by water
Mechanism separates the backflow of above-mentioned cooling water, enters to exercise the water stopping control that the circulation of the cooling water of chilled(cooling) water return (CWR) stops, by
The situation that the cooling water that this suppression is flowed in water jacket takes away the heat of engine, promotes the preheating of engine.
In the cooling device according to V-type engine of each bank of cylinder provided with water jacket, it is also provided with water as described above and stops
Mechanism, if entering water-filling in the preheating of engine stops control, it becomes possible to promote the preheating of engine.But, start in V-type
In the cooling device of machine, there is the structure for possessing mechanical water pump, the water pump have to two banks of cylinder water jacket individually
Ground sprays 2 ejiction openings of cooling water.In the cooling device using the V-type engine of such water pump, stop even if entering water-filling
Only control, it is also possible to can not fully obtain the effect that preheating promotes.
Fig. 7 shows the engine cooling apparatus being applicable in the V-type engine of water jacket 50F, 50S with each bank of cylinder
One of chilled(cooling) water return (CWR).The engine cooling apparatus possesses：Mechanical water pump 52 with 2 ejiction openings 51F, 51S；Make
The water shut-down mechanism 53 that the circulation of cooling water stops.
As shown in fig. 7, in the engine cooling apparatus, 2 ejiction openings 51F, 51S of water pump 52 are respectively by linking water
Road 54F, 54S and with corresponding water jacket 50F, 50S link.On the other hand, being provided with each water jacket 50F, 50S downstream makes to pass through
The merging part 55 at each water jacket 50F, 50S cooling water interflow.Also, in the engine cooling apparatus, chilled(cooling) water return (CWR) structure
Turn into, passed through each water jacket 50F, 50S cooling water after the interflow of merging part 55, water pump 52 is returned to by radiator 56
Suction inlet 57.
On the other hand, water shut-down mechanism 53 is arranged between the merging part 55 in such chilled(cooling) water return (CWR) and radiator 56
Part.Also, by water shut-down mechanism 53, it will separate from merging part 55 to the flowing of the cooling water of radiator 56, thus enter
Exercise the water stopping control that the circulation of the cooling water of chilled(cooling) water return (CWR) stops.
By the rotation as the bent axle of engine output shaft, powered mechanical water pump 52 is even in cooling water
Also continue to be driven in the stopping of the cooling water circulation in loop.Stop the time point that control starts in water, in chilled(cooling) water return (CWR)
The cooling water of a certain degree of amount is also remained to the part of suction inlet 57 from water shut-down mechanism 53.Therefore, water pump 52 stops in water
A period of time after the beginning only controlled, proceed from the cooling water of suction and the suction of the cooling water of suction inlet 57 from
Two ejiction opening 51F, 51S ejection.
But, due to subsidiary engine layout of engine etc., there is ejiction opening 51F, 51S of each bank of cylinder or link water
Road 54F, 54S are the situation of different size and/or shape.Under such circumstances, in ejiction opening 51F and ejiction opening 51S, water pump
The ejection ability of 52 cooling water produces difference sometimes.
In the engine cooling apparatus shown in Fig. 7, water jacket 50F, 50S of two banks of cylinder downstream pass through merging part 55
And be connected, in water stops control, form the path for linking 2 ejiction openings 51F, 51S by two water jacket 50F, 50S.Therefore,
If two ejiction opening 51F, 51S ejection ability has differences, the cooling sprayed from the ejiction opening of the high side of the ability of ejection
Water pushes back the cooling water of the ejiction opening ejection from the low side of ejection ability, and thus cooling water is by two water jacket 50F, 50S
Circulation.For example, in the case where ejiction opening 51F ejection ability is high, as shown in Fig. 7 dotted arrow, producing in ejiction opening 51F
Outflow, and by link water route 54F, water jacket 50F, merging part 55, water jacket 50S, link water route 54S and return to ejiction opening 51S's
The circulation of cooling water.Moreover, in the case where ejiction opening 51S ejection ability is high, produce and above-mentioned dotted arrow reversely cold
But the circulation of water.It is low from the ability of ejection even if cooling water can not be sucked from suction inlet 57 when such circulate is produced
The suction of the cooling water of the ejiction opening of one side is also continued to, therefore in water stops control, the circulation of such cooling water sometimes is still
Continue.
Even if in addition, the circulation of the cooling water under form as described above is not produced, if as can not from suction inlet 57
The state of cooling water is sucked, then the side that water pump 52 is introduced from being easier in 2 ejiction openings 51F, 51S sometimes sucks cooling
Water.Also, by the way that the cooling water of suction is sprayed from the ejiction opening of the opposing party, cooling water similar to the above is produced sometimes
Circulation.
The cooling water of the common chilled(cooling) water return (CWR) of flow-rate ratio of the cooling water circulation so produced in water stops controlling is followed
The flow of ring is few.Water jacket 50F, 50S that original cooling water should not flow also have a small amount of flow of cooling water, therefore water stops
Controlling the preheating facilitation effect of the engine produced can be damaged.Moreover, stopping even in water in control, also deposited by suction inlet 57
In the discrepancy of a little cooling water.Also, when the circulation of cooling water as described above occurs, if the outside of engine 10
Cool cooling water is flowed into from suction inlet 57, then the cool cooling can be mixed into the cooling water circulated by water jacket 50F, 50S
Water temperature in water, therefore water jacket 50F, 50S rises and can postponed.
It should be noted that even if the difference of ejiction opening 51F, 51S, the size shape for linking water route 54F, 54S is slight,
The opportunity that the circulation of cooling water as described above occurs can be turned into.Also, if the flowing of the cooling water of circulation is once formed, then
The state of circulation is easier as cooling water, so even the flow of the cooling water of circulation is initially small, sometimes soon
Also the flow that can not ignore can be turned into.Therefore, being not only intentionally makes ejiction opening 51F, 51S, the size for linking water route 54F, 54S
In the case of variform, even and if they size shape it is identical in design in the case of, chi caused by mismachining tolerance
The small difference of very little shape can also produce the circulation of cooling water as described above sometimes.
The content of the invention
The purpose of the disclosure is that the circulation for suppressing cooling water is produced in it should stop the stopping control of the water of circulation of cooling water
And preheat the situation of facilitation effect decline.
Realize that the engine cooling apparatus of above-mentioned purpose possesses：Water pump, is the rotation for being configured to the output shaft by engine
Then powered mechanical water pump, with suction cooling water suction inlet and spray cooling water N number of ejiction opening, N be 2 with
On integer；N number of water jacket, to be arranged on by way of around the combustion chamber of the engine in the engine, and respectively
Each ejiction opening with N number of ejiction opening is corresponding；N number of link water route, by N number of ejiction opening respectively with it is corresponding described
Water jacket links；Merging part, makes the cooling water interflow for having passed through each water jacket of N number of water jacket；Backflow water route, makes described
The cooling water at merging part interflow flows back to the suction inlet；Water shut-down mechanism, is configured to that the cold of the backflow water route will have been passed through
But the backflow of water separates；And N number of connection water route, N number of link water route is stopped machine not via water described in N number of water sleeve
Structure and be respectively communicated with the suction inlet.
In the circulating path (chilled(cooling) water return (CWR)) of the cooling water of such engine cooling apparatus, above-mentioned N number of water jacket with
The state being connected in parallel is set.Also, the backflow of the cooling water from merging part to suction inlet is separated by water shut-down mechanism, by
This enters to exercise the water stopped by the circulation of the cooling water of above-mentioned N number of water jacket and stops control.It should be noted that in the engine
In cooling device, due to using mechanical water pump, therefore in water stops control, water pump also continues to action.
In above-mentioned engine cooling apparatus, water stop control in, link water route also via connection water route and with suction
Mouth connection.A part for the pressure produced due to the ejection from ejiction opening is become separated in flight by connecting water route towards suction inlet, because
The ejection pressure that this cooling water into water jacket applies correspondingly is alleviated.If the ejection pressure that the cooling water into water jacket applies
Absolute size diminishes, then the ejection pressure of each water jacket is difficult to produce too big difference, therefore can suppress to have passed through the water jacket of merging part
Between cooling water flowing.Further, since having passed through the backflow of the cooling water in connection water route, in water stops control, carry out self-priming
The suction of the cooling water of entrance, the ejection of cooling water from each ejiction opening are also continued to, therefore the cooling water from ejiction opening
Suction will not be produced.Therefore, it is communicated with above-mentioned in the engine cooling apparatus in water route, can suppresses logical in water stops control
The generation of the circulation of the cooling water of water jacket is crossed, and then the decline of the preheating facilitation effect of engine can be suppressed.
It should be noted that the ejection pressure of water pump is pulsed, this is pulsed through linking water route also to the propagation of connection water route.
Make above-mentioned N number of connection water route in the case of the suction side water route interflow being connected with suction inlet, suction side water route can have N
N number of taking mouth that individual connection water route is connected respectively.Here, if 2 taking mouth were facing each other, the arteries and veins in the connection water route of a side
Directly propagate in the connection water route of trend the opposing party.As a result, the pulsation in two connection water routes is interfered with each other, the internal pressure in water route is connected
Increase is changed, the backflow for the cooling water for having passed through connection water route can be hindered.Therefore, each taking mouth of above-mentioned N number of taking mouth
It is preferred that just not configured by with any one taking mouth in other taking mouth in the way of.
But, if by connect water route to suction inlet flow back when cooling water the pressure loss in each connection water route not
Together, then ejection pressure at ejiction opening and the relation and disunity from the flow for connecting the cooling water that water route is flowed back, it is thus possible to nothing
Method reliably relaxes the difference of the internal pressure in N number of link water route.Thus, in above-mentioned engine cooling apparatus, preferably N number of connection water route
Be configured to, from link water route by connect water route to suction inlet flow back when cooling water the pressure loss in above-mentioned N number of connection water
It is all identical in road.Moreover, in connection water route by the case that pipe arrangement is constituted, if the length and internal diameter of the pipe arrangement are in above-mentioned N
It is all identical in individual connection water route, then the pressure loss in N number of connection water route can be made mutually identical, therefore easily make by this
N number of connection water route to suction inlet flow back when cooling water the pressure loss it is consistent.
When making cooling water circulation by water jacket, if allow to have passed through connection water route at the suction inlet for linking water route
Cooling water backflow, then distribute to connection water route and water jacket from ejiction opening to the cooling water that water route sprays is linked.Therefore, if
Flow to the cooling water of connection water route side flowing is excessive, then can not ensure the flow of water jacket.In this case, if from
Link water route by connect water route to suction inlet flow back when the pressure loss of cooling water be more than and from the link water route pass through water jacket
And the pressure loss of the cooling water during backflow of recirculation water road direction suction inlet, then from the stream for linking the cooling water that water route is flowed to water jacket
Amount is more than the flow of the cooling water to the flowing of connection water route side.Therefore, the flow of the cooling water of water jacket ensure become easy.
In the case of being located at chain guard in water pump, above-mentioned N number of link water route and the water route being connected with suction inlet, by inciting somebody to action
Each of above-mentioned N number of link water route links the flexible pipe that water route is connected with water route in cover, can constitute above-mentioned N number of connection water route.
In the case of connection water route is set in limited space in chain guard, if the structure of the hard determined by the shape of pipe etc.
Part constitutes connection water route, then it is set with difficulty, but if the soft flexible pipe bent freely, then its setting becomes
It is more prone to.
In addition, being respectively equipped with 2 banks of cylinder in the cooling device of the V-type engine of water jacket, with the water in two banks of cylinder
The downstream of set sets the situation of water separating mechanism to compare respectively, the interflow collaborated in the cooling water for having passed through the water jacket of two banks of cylinder
Situation of the part in the downstream in portion provided with water separating mechanism can realize that water stops control with simple structure.But, if
Using the mechanical water pump for 2 ejiction openings for spraying cooling water respectively with the water jacket to two banks of cylinder, then returned in cooling water
The part than water shut-down mechanism by upstream side on road can form the path for making cooling water be circulated by two water jackets, therefore nothing
The water that method negative declines preheating facilitation effect stops the possibility that the circulation of the cooling water in control occurs.Certainly, shape is passed through
Make cooling water to the structure of above-mentioned 2 water jacket branches in water route is linked as the ejiction opening of water pump is reduced into 1, or
The structure of water shut-down mechanism is set respectively in the downstream of water jacket, although water as described above can be avoided to stop the cooling in control
The circulation of water is produced, but this needs the change of large-scale structure.On this point, in above-mentioned engine cooling apparatus,
Only by setting the change for 2 easy structures of the comparison for connecting water route for linking each link water route and suction inlet, it can just press down
Water processed stops the generation of the circulation of the cooling water in control, therefore, it is possible to suppress the increasing of the manufacturing cost associated with the change of structure
Plus.
Brief description of the drawings
Fig. 1 is the structure for schematically showing the chilled(cooling) water return (CWR) that the engine cooling apparatus of first embodiment possesses
Figure.
Fig. 2 is the component parts i.e. water pump for the engine cooling apparatus for schematically showing Fig. 1 and its inside structure on periphery
The sectional view made.
Fig. 3 is the water pump and its neighbouring top view of Fig. 2 from the face side of engine.
Fig. 4 is the figure for the flowing that the water for the engine cooling apparatus for representing Fig. 1 stops the cooling water in control.
Fig. 5 A~Fig. 5 C are the sketches of the example for the connection form for representing each connection water route and suction side water route respectively.
Fig. 6 is the structure for schematically showing the chilled(cooling) water return (CWR) that the engine cooling apparatus of second embodiment possesses
Figure.
Fig. 7 is that the water for representing conventional engine cooling apparatus stops the figure of the flowing of the cooling water in control.
Embodiment
(first embodiment)
Hereinafter, 1~Fig. 5 of reference picture C, describe the first embodiment of engine cooling apparatus in detail.Present embodiment
Engine cooling apparatus is applied to the V-type engine with 2 banks of cylinder (bank).Here, the power of engine is taken out into side,
That is the side of connection speed changer is the rear portion of the engine, and the part of the side opposite with rear portion is front portion.Also, here, just
Cylinder when observing the front portion of the engine over the ground positioned at left-hand side is classified as the first bank of cylinder, and is classified as positioned at the cylinder of right-hand side
Two banks of cylinder.It should be noted that in the member of formation of the engine cooling apparatus of present embodiment with above-mentioned 2 gas
The member of formation that cylinder row are arranged in pairs respectively, file leader part marks common numbering i.e. symbol, and in the first bank of cylinder side
Member of formation mark end be " F " symbol, the second bank of cylinder side member of formation mark end be " S " symbol.
As shown in figure 1, in the engine 10 for possessing above-mentioned 2 bank of cylinder, in each bank of cylinder provided with 2 water jackets 13F, 13S.
That is, by making the water route in the engine 10 of flow of cooling water around the combustion chamber 10F of each cylinder of the first bank of cylinder i.e.
Water jacket 13F；By making the water in the engine 10 of flow of cooling water around the combustion chamber 10S of each cylinder of the second bank of cylinder
Road is water jacket 13S.Water jacket 13F by way of the cylinder block 11F and cylinder cover 12F of the first bank of cylinder inside to be set.And
And, water jacket 13S by way of the cylinder block 11S and cylinder cover 12S of the second bank of cylinder inside to be set.Each water jacket 13F,
13S have inflow entrance 14F, 14S of cooling water for being set on corresponding cylinder block 11F, 11S and corresponding cylinder cover 12F,
Flow export 15F, 15S of the cooling water set on 12S.
The engine cooling apparatus of present embodiment possesses the cooling for making cooling water be circulated by above-mentioned water jacket 13F, 13S
Water loop.In the chilled(cooling) water return (CWR), above-mentioned 2 water jackets 13F, 13S are connected in parallel.That is, cooling water in chilled(cooling) water return (CWR)
Flowing is branching into 2 than each water jacket 13F, 13S by upstream side, and each flowing of branch is passing through water jacket 13F, 13S respectively
Collaborated after one side and the opposing party.
Chilled(cooling) water return (CWR) possesses by the rotation of the bent axle 42 (reference picture 2) of the output shaft as engine 10 to drive
Mechanical water pump 16.In the present embodiment, as water pump 16, using centrifugal pump.In water pump 16 provided with 1 suction inlet
17 and 2 ejiction openings 18F, 18S.Also, water pump 16 corresponds to driving and sprays the cooling water sucked from suction inlet 17 from 2
Mouth 18F, 18S spray respectively.
The ejiction opening 18F positioned at the first bank of cylinder side in above-mentioned 2 ejiction openings 18F, 18S by linking water route 19F and
Link with the water jacket 13F of the first bank of cylinder inflow entrance 14F.Moreover, the ejiction opening 18S positioned at the second bank of cylinder side passes through link
Water route 19S and link with the water jacket 13S of the second bank of cylinder inflow entrance 14S.It should be noted that in this engine cooling apparatus
In, it is provided with the chain guard 33 set in the way of covering cylinder block 11F, 11S and cylinder cover 12F, 12S engine front side
Water pump 16 and 2 links water route 19F, 19S.
Outflow water route 20F, 20S are linked with respectively in each water jacket 13F, 13S flow export 15F, 15S.Two outflow water routes
20F, 20S are connected to flow control valve 22 after merging part 21 is collaborated.
Flow control valve 22 possesses from the inflow entrance 22A that is flowed into of outflow water route 20F, 20S cooling water and from the inflow
3 flow exports 22B, 22C, 22D that the cooling water that mouth 22A is flowed into can flow out.Radiator water route is connected with flow export 22B
24, the radiator water route 24 is in midway provided with the radiator 25 that water cooling will be cooled down by the heat exchange with outer gas.Moreover,
Flow export 22C connection having heaters water route 26, the heater water route 26 midway be provided with by the heat exchange with cooling water incite somebody to action
The heater core 28 for the air heating blown to machine room.In addition, being connected with flow export 22D for making cooling water bypass radiator
25 and this both sides of heater core 28 and the bypass waterway 27 that flows.Also, flow control valve 22 by make each flow export 22B,
22C, 22D variable open area, to adjust this each water route stream to radiator water route 24, heater water route 26 and bypass waterway 27
The flow of the cooling water gone out.
The downstream in radiator water route 24 is via the connector 45 located at chain guard 33 with being arranged in the chain guard 33
Cover in water route 29 connect, and cover in the downstream in water route 29 be connected with the suction inlet 17 of water pump 16.Moreover, heater water route
26 downstream is connected to the part of the downstream of ratio radiator 25 in radiator water route 24, the downstream connection of bypass waterway 27
In the part of the downstream of ratio heater core 28 in heater water route 26.Such radiator water route 24, heater water route 26 and
Bypass waterway 27 is the backflow water route for making the cooling water behind the interflow of merging part 21 be flowed back to the suction inlet 17 of water pump 16.
Link water route 19F, 19S link respectively with water route 29 in cover 2 by above-mentioned 2 in addition, being provided with chilled(cooling) water return (CWR)
Individual connection water route 30F, 30S.Also, by above-mentioned connection water route 30F, 30S, by each link water route 19F, 19S and water pump 16
Suction inlet 17 be respectively communicated with.
The action of such flow control valve 22 located at chilled(cooling) water return (CWR) by engine control electronic control unit
46 controls.Electronic control unit 46 is according in the testing result of inlet water temperature sensor 47 and exit water temperature sensor 48, machine room
The behaviour in service heated etc. control the action of flow control valve 22, to adjust in radiator water route 24, heater water route 26
And the flow of the cooling water flowed in this each water route of bypass waterway 27.It should be noted that inlet water temperature sensor 47 is detection
The sensor of the temperature (inlet water temperature) of any one cooling water flowed into inflow entrance 14F, 14S, exit water temperature sensor
48 be sensor of the detection from the temperature (exit water temperature) of the cooling water of any one outflow in flow export 15F, 15S.
Electronic control unit 46 engine 10 pre- hanker and exit water temperature to be defined water stop below temperature when, it is real
Shi Shui stops control as a ring of the action control of flow control valve 22.Water stops the flow control valve 22 in control with by 3
The mode of individual flow export 22B, 22C, 22D Close All is acted.Also, formed to radiator water route 24, heater water route 26 and
Bypass waterway 27 does not flow out the state of cooling water, by the backflow of the cooling water of the suction inlet 17 from merging part 21 to water pump 16 every
It is disconnected, thus stop the circulation of the cooling water of chilled(cooling) water return (CWR).In the engine cooling apparatus of present embodiment, such
Water stops in control, and the flow control valve 22 from merging part 21 to the backflow cut-off of the cooling water of suction inlet 17 is stopped equivalent to water
Locking mechanism.
Next, reference picture 2 and Fig. 3, are described in more detail the structure on the water pump 16 in chilled(cooling) water return (CWR) and its periphery.Need
It is noted that in fig. 2, the front of engine 10 is " Fr " and rear is indicated by means of an arrow for " Rr ".Moreover, in fig. 2,
For convenience of description the internal structure in each portion and schematically show construction.Therefore, shown in the cross-sectional configuration and Fig. 3 shown in Fig. 2
Water pump 16 top view shown in construction may not be consistent.
As shown in Fig. 2 chain guard 33 has overlapping 3 plate of mainboard 34, pump cover 35 and inner panel 36.Pump cover 35 is with covering
Mode in the face of the engine front side of mainboard 34 is set.Moreover, inner panel 36 is to be covered in the engine rear side of mainboard 34
The mode in face set.
The space for the drum for being formed with the pump chamber 37 as water pump 16 is divided between mainboard 34 and pump cover 35.In pump
The inside of room 37 contains the impeller 38 of water pump 16.The rotary shaft 38A of impeller 38 is by being fixed on the e axle supporting of bearing 39 of pump cover 35
For that can rotate.Moreover, being pacified in the end of the rotary shaft 38A of impeller 38 engine front side in the way of it can rotate integrally
Equipped with pump pulley 41.Pump pulley 41 Yu the end that bent axle 42 is installed in the way of it can rotate integrally crankshaft roller 43 it
Between be wrapping with band 44, the rotation steering pump pulley 41 of bent axle 42 is transmitted, and then is transmitted via rotary shaft 38A to impeller 38.
Slided in addition, the band 44 is also hung on fixed subsidiary engine in the rotary shaft of the various auxiliary engines beyond water pump
Wheel.In the layout of these pulleys, pump pulley 41 is arranged on the center than two banks of cylinder close to the position of the second bank of cylinder.Cause
This, pump chamber 37 is also disposed in the center than two banks of cylinder close to the position of the second bank of cylinder.
In the periphery of pump chamber 37,2 ejiction openings 18F, 18S are open respectively in the relative part of the periphery.This 2 ejections
Mouth 18F, 18S are linked to the above-mentioned 2 link water route that formation is divided between mainboard 34 and pump cover 35 in the same manner as pump chamber 37
19F、19S.Link water route 19F than ejiction opening 18F to the first bank of cylinder side to extend, by being formed at the through hole 34F of mainboard 34, even
Tie in the water jacket 13F of the cylinder block 11F settings in the first bank of cylinder inflow entrance 14F.Moreover, linking water route 19S compares ejiction opening
18S extends to the second bank of cylinder side, by being formed at the through hole 34S of mainboard 34, is linked to the cylinder block 11S in the second bank of cylinder
The water jacket 13S of setting inflow entrance 14S.
It should be noted that as described above, pump chamber 37 is arranged on the center than two banks of cylinder close to the position of the second bank of cylinder
Put.On the other hand, in engine 10, it is right as left and right that water jacket 13F, 13S of two banks of cylinder inflow entrance 14F, 14S are arranged on
The position of title.Therefore, the link water route 19S of the second bank of cylinder side is shorter than the link water route 19F of the first bank of cylinder side.Need explanation
If, two link water route 19F, 19S water route length it is different, pass through two cooling waters when linking water route 19F, 19S
The pressure loss produces difference, and the flow of two water jacket 13F, 13S cooling water may create a difference.In the engine cooling apparatus
In, the ejiction opening 18S of the ejiction opening 18F of the first bank of cylinder side the second bank of cylinder of open area ratio side is wide, and the first cylinder
The water route sectional area for arranging the link water route 19F of side is wider than the link water route 19S of the second bank of cylinder side, links water route from there through two
The pressure loss of cooling water when 19F, 19S becomes identical.Certainly, even if the water route sectional area for linking water route 19F, 19S is identical
And only make ejiction opening 18F, 18S aperture area different, or ejiction opening 18F, 18S aperture area are identical and only make link water
Road 19F, 19S water route sectional area are different, can also make the pressure loss one by cooling water during two link water route 19F, 19S
Cause.
On the other hand, divided between mainboard 34 and inner panel 36 and form water route 29 in above-mentioned cover.Mainboard 34 and leaf
Water route 29 is by the circular hole and pump in the relative circular holes being formed in part with as suction inlet 17 of rotary shaft 38A of wheel 38, cover
Room 37 is connected.It should be noted that as shown in figure 3, as water route 29 in the cover in suction side water route being arranged to that radiator will be connected
The connector 45 in water route 24 is connected with suction inlet 17.In addition, in this engine cooling apparatus, connector 45 is located at pump cover 35.
Conveying end 31F, 31S are respectively equipped with each link water route 19F, 19S midway, in each conveying end 31F, 31S difference
It is connected with each connection water route 30F, 30S.On the other hand, be connected with each conveying end 31F, 31S the one of each connection water route 30F, 30S
The end of the opposite side of side is connected to taking mouth 32F, 32S that water route 29 is set in cover.It should be noted that in Fig. 2
In, for the ease of diagram, cover in water route 29 each taking mouth 32F, 32S position by positioned at suction inlet 17 nearby in the way of retouch
Paint, but in fact, as shown in figure 3, each taking mouth 32F, 32S is arranged on the position separated from suction inlet 17.
Two connection water route 30F, 30S use same inner diameter, the pipe arrangement of equal length.In addition, the connection of composition two water route 30F,
The internal diameter of 30S pipe arrangement by each connection water route 30F, 30S from each link water route 19F, 19S to suction inlet 17 so that when being flowed back
The pressure loss of cooling water is more than in chilled(cooling) water return (CWR) by way of the pressure loss of cooling water when water jacket 13F, 13S are circulated
Setting.
It should be noted that in this engine cooling apparatus, using the flexible pipe conduct formed by rubber elastomeric material
Constitute two pipe arrangements for connecting water route 30F, 30S.The reasons why it is used is as described below.
As shown in figure 3, in this engine cooling apparatus, the connection water route 30F of the first bank of cylinder side conveying end 31F with
Taking mouth 32F distance is different from the connection water route 30S of the second bank of cylinder side conveying end 31S and taking mouth 32S distance.Cause
This, in order that the length of two connection water route 30F, 30S pipe arrangement is identical, it is necessary to make two pipe arrangements be different shapes.On this
Point, if using the soft flexible pipe bent freely as such pipe arrangement, two connection water route 30F, 30S pipe arrangement is common
Logical part, can cut down components number.Moreover, connection water route 30F, 30S need to be arranged on the limited space in chain guard 33
Interior, if the component of the hard determined by the shape of pipe etc. constitutes connection water route 30F, 30S, it is set along with difficulty,
But if the flexible pipe bent freely, then can more easily set.
It should be noted that in the water pump 16 that water stops in control, being stirred by the rotation of impeller 38 in pump chamber 37
Cooling water, due to its influence, part in each link water route 19F, 19S ejiction opening 18F, 18S vicinity, water route 29 in cover
The part of vicinity of suction inlet 17 form turbulent flow sometimes.If respectively connecting water route 30F, 30S conveying end 31F, 31S, taking
Entrance 32F, 32S are arranged on such part, then due to the influence of turbulent flow, can hinder and pass through each connection water route 30F, 30S
The backflow of cooling water, possibly can not be adequately suppressed the generation of the circulation of cooling water.Therefore, it is each to connect taking for water route 30F, 30S
Outlet 31F, 31S, taking mouth 32F, 32S are preferably set in the position separated from ejiction opening 18F, 18S, suction inlet 17 to will not be by
To in place of the influence of turbulent flow.
(action effect)
Next, effect and its effect of the engine cooling apparatus of the present embodiment more than explanation constituted like that.
In the operating of engine 10, water pump 16 is driven by the rotation of bent axle 42, the cooling that will be sucked from suction inlet 17
Water sprays from 2 ejiction openings 18F, 18S.Pass through each link water route 19F, 19S from 2 ejiction openings 18F, 18S cooling water sprayed
It is respectively transmitted to water jacket 13F, 13S of two banks of cylinder.Also, pass through each water jacket 13F, 13S cooling water respectively by each
Flow out water route 20F, 20S and after the interflow of merging part 21, flowed into flow control valve 22.
Now, if at least one in 3 flow exports 22B, 22C, 22D of flow control valve 22 is opened, cooling water exists
After having passed through flow control valve 22, more than any one in radiator water route 24, heater water route 26, bypass waterway 27
And cover interior water route 29 and flowed back to the suction inlet 17 of water pump 16.As a result, cooling water by two water jacket 13F, 13S in cooling water
Circulated in loop.
It should be noted that during so cooling water is circulated by water jacket 13F, 13S, cooling water is also from each link water route
19F, 19S continue to flow back by each connection water route 30F, 30S to suction inlet 17.Also, the stream of each water jacket 13F, 13S cooling water
Measure the flow for reducing the cooling water so flowed back from the flow of each ejiction opening 18F, 18S cooling water sprayed than water pump 16.Therefore,
If the flow of each connection water route 30F, 30S now are excessive, it is impossible to ensure water jacket 13F, 13S cooling water flow.
On this point, in the engine cooling apparatus of present embodiment, as described above, by each connection water route 30F,
The pressure loss of cooling water when 30S flows back from from each link water route 19F, 19S to suction inlet 17 is much larger than from each link water route
19F, 19S have passed through after each water jacket 13F, 13S, by as the backflow radiator water route 24 in water route, heater water route 26 and
In bypass waterway 27 any one and to suction inlet 17 circulate when cooling water the pressure loss.Therefore, from water jacket 13F, 13S
From the point of view of flow, each connection water route 30F, 30S flow turn into small flow, have passed through connection water route 30F, 30S cooling water
Backflow caused by each water jacket 13F, 13S flow decline it is limited.Therefore, in the engine cooling apparatus of present embodiment,
Even if not taking using the big large-scale water pump of ejection ability, or set each connection water route 30F, 30S in water stopping control
In beyond carry out locking valve as manufacturing cost increased countermeasure, can also ensure that water jacket 13F, 13S cooling water
Flow.
On the other hand, when starting above-mentioned water by electronic control unit 46 and stopping controlling, flow control valve 22 it is complete
Flow export 22B, 22C, the 22D in portion are closed, and the backflow from merging part 21 to the cooling water of the suction inlet 17 of water pump 16 is separated.Its
As a result, resting on the specific discharge control valve 22 of chilled(cooling) water return (CWR) from each ejiction opening 18F, 18S of water pump 16 cooling water sprayed
By the interval of upstream side (water stops interval).
It should be noted that such water stop control in, be also due to bent axle 42 rotation and mechanical water pump
16 continue driving.After water stops controlling just to start, in radiator water route 24, heater water route 26, bypass waterway 27, cover
Interior water route 29 remains a certain degree of cooling water.Therefore, after the beginning that water stops control, water pump 16 is during a period of time
Such cooling water is sucked from suction inlet 17, and is sprayed from two ejiction opening 18F, 18S.
In the chilled(cooling) water return (CWR) of the engine cooling apparatus of present embodiment, the water stopped in water in control stops interval
It is interior, the path that cooling water can circulate by two water jacket 13F, 13S is formed between 2 ejiction openings 18F, 18S.That is, it is from water
The ejiction opening 18F of pump 16 has passed through after link water route 19F, the water jacket 13F and outflow water route 20F of the first bank of cylinder side, passes through
Merging part 21, by outflow water route 20S, the water jacket 13S and link water route 19S of the second bank of cylinder side, from ejiction opening 18S to water pump
16 paths or its opposite path returned.
In water stops control when cooling water is circulated by such path, what the flowing of original cooling water should stop
Flowing has cooling water in water jacket 13F, 13S, therefore water stops controlling the preheating facilitation effect of the engine 10 produced to be damaged.So
The circulation of cooling water produced due to the difference of the ejection ability at the ejiction opening 18F and ejiction opening 18S of water pump 16.In this reality
In the engine cooling apparatus for applying mode, in the first bank of cylinder side and the second bank of cylinder side, ejiction opening 18F, 18S, link water route
19F, 19S size, shape are different, easily produce the difference for spraying and measuring one's own ability.
In addition, when as the state that cooling water can not be sucked from suction inlet 17, the substitution suction inlet 17 of water pump 16 and from spray
Any one suction cooling water in 18F, 18S is exported, following for the cooling water in water stopping control as described above is thus also produced
Ring.From the suction of such ejiction opening 18F, 18S cooling water due to side corresponding with ejiction opening 18F and with ejiction opening 18S
The destruction of the symmetry of hydromechanical state between corresponding side and occur, ejiction opening 18F, 18S, link water route 19F,
19S size, the difference of shape turn into the big of the destruction of such symmetry will be because.
But, in the engine cooling apparatus of present embodiment, stop even in water in control, each link water route 19F,
19S is connected also by connection water route 30F, 30S with the suction inlet 17 of water pump 16.Therefore, from the cold of each ejiction opening 18F, 18S
But a part for the pressure that the ejection of water is produced is become separated in flight by each connection water route 30F, 30S towards suction inlet 17, to two water jackets
The ejection pressure that cooling water in 13F, 13S applies correspondingly is alleviated.Also, if the cooling water into two water jacket 13F, 13S
The absolute size of the ejection pressure of application reduces, then they spray the difference pressed and also reduced.Therefore, the water jacket of merging part 21 has been passed through
The flowing of cooling water in 13F, 13S is suppressed.
If it should be noted that by two connection water route 30F, 30S to suction inlet 17 flow back when cooling water pressure
Loss has differences, then the alleviation effects formation difference for the ejection pressure that each connection water route 30F, 30S are produced, according to circumstances not
Together, the difference for the ejection pressure that the cooling water into each water jacket 13F, 13S applies can expand on the contrary sometimes.Under such circumstances, it is impossible to
Suitably suppress the generation of the cooling water circulation as caused by the difference of ejection ability.
On the other hand, constituting by each connection water route 30F, 30S from ejiction opening 18F, 18S to the cooling of suction inlet 17
In link water route 19F, 19S, connection water route 30F, 30S and the interior water route 29 of cover of the return flow path of water, water route 30F, 30S are connected
Compared with linking the interior water route 29 of water route 19F, 19S, cover, water route sectional area is small.Therefore, water route 30F, 30S pressure loss are connected
Occupy the ratio increase of the overall pressure loss of return flow path.In the engine cooling apparatus of present embodiment, each company is constituted
Water flowing road 30F, 30S pipe arrangement use same inner diameter, the pipe arrangement of equal length, and the connection water route 30F, 30S pressure loss become
Obtain identical.Therefore, it is possible to suppress smaller the difference of the pressure loss of above-mentioned return flow path, can more reliably it suppress due to spray
The circulation for the cooling water for exporting the difference of 18F, 18S ejection ability and producing.
Certainly, it is each link water route 19F, 19S from each ejiction opening 18F, 18S to connection water route 30F, 30S conveying end
The interval pressure loss untill 31F, 31S is it is also preferred that identical.In the engine cooling apparatus of present embodiment, the first cylinder
The aperture area for arranging the ejiction opening 18F of side and the water route sectional area for linking water route 19F are wider than the second bank of cylinder side.Therefore, first
The link water route 19F of bank of cylinder side from ejiction opening 18F to link water route of the conveying end 31F distance than the second bank of cylinder side
19S from ejiction opening 18S to conveying end 31S distance, thus enable that the above-mentioned interval pressure loss is consistent.Need explanation
, in the case of ejiction opening 18F, 18S aperture area and link water route 19F, 19S water route sectional area identical, pass through
Make each link water route 19F's identical to conveying end 31F, 31S distance from ejiction opening 18F, 18S, above-mentioned interval pressure can be made
Power loss is consistent.But, as described above, the interval pressure loss linked in water route 19F, 19S occupies return flow path entirety
The ratio of the pressure loss is less big.Therefore, if respectively link water route 19F, 19S from ejiction opening 18F, 18S to conveying end 31F,
31S distance does not have extreme difference, with regard to hardly producing problem in practical use.
In addition, cooling water is flowed by above-mentioned connection water route 30F, 30S, thus in water stops control, Fig. 4 institutes are formed
Show the circulation of such 2 cooling waters.That is, one of above-mentioned circulation to lead to successively from the pump chamber 37 of water pump 16 (reference picture 2,3)
The mode for cross ejiction opening 18F, linking water route 19F, connection water route 30F, cover interior water route 29 and return to pump chamber 37 from suction inlet 17 is entered
OK.Moreover, above-mentioned circulation another with from the pump chamber 37 of water pump 16 pass sequentially through ejiction opening 18S, link water route 19S, connection
Water route 30S, the mode covered interior water route 29 and return to pump chamber 37 from suction inlet 17 are carried out.
So circulated by cooling water, even in water stop control in, the suction of the cooling water from suction inlet 17 and come
Also continue without interruption from the ejection of each ejiction opening 18F, 18S cooling water, so that the suction of the cooling water from suction inlet 17
Do not interrupt.Therefore, for the suction for the cooling water from ejiction opening 18F, 18S for replacing suction inlet 17, or even due to the suction
And the water produced stops the circulation of the cooling water in control, it can also be suppressed.
As previously discussed, in the engine cooling apparatus of present embodiment, the water that should stop in the circulation of cooling water stops
In only controlling, it can suppress to produce the circulation of cooling water and preheat the situation that facilitation effect declines.
It should be noted that the change that cycles through that water stops the cooling water by water jacket 13F, 13S in control is cooled down
The structure of water loop and can avoid occur.For example, if the ejiction opening of water pump being reduced into 1 and incited somebody to action in water route is linked
Cooling water is to the structure of the water jacket branch of two banks of cylinder, then the circulation of cooling water that water stops in control will not occur.However,
The cooling device of V-type engine it is most of in, link water route to shorten, it is many using the water pump with 2 ejiction openings, in order to
The change of large-scale structure is needed as such structure.On this point, in the present embodiment, by only set by
Each change for linking 2 easy structures of the comparison for connecting water route 30F, 30S that water route 19F, 19S link with suction inlet 17, just
The water that water stops in control can be suppressed stop the circulation of interval cooling water, therefore can suppress and structure changes associated cost
Increase.
In the engine cooling apparatus of above-mentioned embodiment, it is connected each on water route 29 in the cover being connected with suction inlet 17
Water route 30F, 30S are connected, the cooling water flowed back by each connection water route 30F, 30S collaborates in cover at water route 29.Such
Connect the joining part of water route 30F, 30S cooling water, the problem of producing following sometimes.
That is, the ejection pressure pulsation of water pump, the pulsation is also propagated to each connection water route.As shown in Figure 5A, relative to suction
Suction side water route X, 2 connections water route Y1, Y1 taking mouth y1, y2 that mouth is connected are arranged on the situation of position facing each other
Under, the connection water route Y1 (Y2) of side pulsation is directly propagated to the connection water route Y2 (Y1) of the opposing party.Also, connect water two
Road Y1, Y2 inside and pulse and interfere with each other, the variation of internal pressure increase, therefore hinder and passed through the cold of two connection water route Y1, Y2
But the backflow of water.Therefore, in the case where taking mouth y1, y2 is opposite to each other configuration, water stops the cooling water circulation in control
Inhibition may be damaged.
The interference of such pulsation is by making each connection water route Y1, Y2 taking mouth y1, y2 just pair not suppress mutually.
For example, in Fig. 5 B structure, two connection water route Y1, Y2 are relative to suction side water route X in the extension side to same suction side water route X
Connected to the position of skew, thus avoid the just right of two taking mouth y1, y2.Moreover, in Fig. 5 C structure, from connection water route
Y1 and the direction beyond the opposite direction of the suction side water route X closures being connected, by another connection water route Y2 and suction side water
Road X connections, thus avoid the just right of two taking mouth y1, y2.It should be noted that the connection water route of more than 3 with suction inlet
In the case of collaborating in connected suction side water route, the taking mouth in each connection water route is not all mutually just right, thus, it is possible to suppress
Connect the interference of the pulsation between water route.
But, in the case of there is fully big volume in the suction side water route X that each connection water route Y1, Y2 collaborate, even if
Taking mouth y1, y2 is not just right, due to there is distance, therefore the biography of the pulsation to other connection water routes between taking mouth y1, y2
Broadcast also restrained.Therefore, in this case, also can allow connect water route Y1, Y1 to taking mouth y1, y2 just to suction
Enter side water route X connection.Water route 29 has between connection water route 30F, 30S in the cover of the engine cooling apparatus of above-mentioned embodiment
Pulsation propagate will not turn into problem degree sufficient volume.Therefore, in the above-described embodiment, although two connection water
Road 30F, 30S taking mouth 32F, 32S turn into configuration facing each other, but this will not turn into problem.
Above-mentioned embodiment can also change implementation as follows.
In the above-described embodiment, flexible pipe is employed as composition each connection water route 30F, 30S pipe arrangement, but also may be used
To be used as the pipe arrangement for being constituted each connection water route 30F, 30S using metal system or the resinous pipe for comparing hard.
In the above-described embodiment, water pump 16 or link water route 19F, 19S and be arranged at chain guard 33, but can also be by
They are arranged on the part beyond chain guard 33.For example, water pump 16 or link water route 19F, 19S can be arranged at into cylinder block
11F、11S。
In the above-described embodiment, flow control valve 22 by cooling water to radiator water route 24, heater water route 26 and
The outflow of bypass waterway 27 separates simultaneously, thus will separate from merging part 21 to the backflow of the cooling water of suction inlet 17, but
By mechanism in addition, the cut-off of such backflow can be carried out.For example, can be in radiator water route 24, heater water
Road 26 and bypass waterway 27 set different valves respectively, by the way that they are simultaneously closed off, to separate from merging part 21 to suction inlet
The backflow of 17 cooling water.In this case, this 3 valves constitute water shut-down mechanism.
In the above-described embodiment, cooling water is made to be flowed back from merging part 21 to suction inlet 17 as in chilled(cooling) water return (CWR)
Water route, this 3 water routes of radiator water route 24, heater water route 26 and bypass waterway 27 are provided with parallel, it is but such
The number in water route can also be less than 2, more than 4.
In the above-described embodiment, so that from each link water route 19F, 19S by each connection water route 30F, 30S to suction
The pressure loss of cooling water when mouth 17 flows back is much larger than cooling when being circulated by each water jacket 13F, 13S in chilled(cooling) water return (CWR)
The mode of the pressure loss of water, has carried out the size setting of each connection water route 30F, 30S of composition pipe arrangement.If increasing pressure to damage
Lose, be then restricted naturally by the flow of each connection water route 30F, 30S cooling water flowed back.Therefore, water stops control
In cooling water circulation suppression the backflow of substantial amounts of cooling water is needed by each connection water route 30F, 30S in the case of, it is excellent
Choosing is carried out as follows.That is, cooling water when making to flow back by each connection water route 30F, 30S is set on each connection water route 30F, 30S
The pressure loss be equal to or more than by chilled(cooling) water return (CWR) circulate cooling water the pressure loss, and separate or limitation flow back
Valve.Like this, in water stops control, substantial amounts of cooling water is flowed back by each connection water route 30F, 30S, can be suppressed cold
But the generation of water circulation.On the other hand, beyond water stops in control, it can suppress what is flowed back by each connection water route 30F, 30S
The flow of cooling water, it can be ensured that water jacket 13F, 13S cooling water flow.
In the above-described embodiment, the length and internal diameter phase of each connection water route 30F, 30S of composition pipe arrangement (flexible pipe) are made
Together, thus from each link water route 19F, 19S by each connection water route 30F, 30S to suction inlet 17 flow back when cooling water pressure
Loss is mutually identical.Even if the internal diameter of two pipe arrangements, length are inconsistent, as long as the pressure of cooling water when being flowed back by both is damaged
Dephasing is same, it becomes possible to more reliably reduce the link water route produced due to the difference of ejiction opening 18F, 18S ejection ability
The difference of 19F, 19S internal pressure, can realize that water stops the more reliable suppression of the cooling water circulation in control.For example, making composition
One side of two connection water route 30F, 30S pipe arrangement is longer than the opposing party, correspondingly, the internal diameter of a side of above-mentioned pipe arrangement is compared the opposing party
Greatly, thus enable that the pressure loss of the cooling water flowed back by two connection water route 30F, 30S is identical.It should be noted that
The pressure loss of cooling water when being flowed back even by each connection water route 30F, 30S has differences, as long as it will not cause
In the range of the expansion for the difference for stating such internal pressure for linking water route 19F, 19S, it becomes possible to realize that water stops the cooling in control
The suppression of water circulation.
In the above-described embodiment, centrifugal pump is employed as water pump 16, even if but using positive displacement
In the case of pump, as long as the construction connected with multiple ejiction openings and this multiple ejiction opening inside pump, with regard to same real estate
Unboiled water stops the circulation of the cooling water for having passed through water jacket in control.Under such circumstances, if by each ejiction opening and each water
The connection water route for setting and being connected with the suction inlet of water pump respectively on the link water route linked is covered, then can suppress to be stopped controlling by water
In cooling water circulation generation caused by engine preheating facilitation effect decline.
(second embodiment)
Next, reference picture 6, illustrates the second embodiment of engine cooling apparatus.
In the first embodiment, illustrate provided with making cooling water be circulated by 2 water jackets 13F, 13S of each group
Chilled(cooling) water return (CWR) V-type engine in be applicable engine cooling apparatus.The engine cooling apparatus, which possesses suppression water, to be stopped
Connection water route 30F, 30S of the generation of cooling water circulation in control.Such water stops the hair of the cooling water circulation in control
The construction that raw suppression is related to is for possessing the engine for the chilled(cooling) water return (CWR) for making cooling water be circulated by the water jacket of more than 3
Cooling device also can be similarly applicable.Moreover, the construction can also be applied to starting with the cylinder arrangement beyond V-type
Machine.
Engine 60 shown in Fig. 6 is set to the cylinder arrangement of the cylinder of tandem 3, the cylinder block 61 and cylinder cover 62 be provided with
Each cylinder corresponding 3 water jackets 63A, 63B, 63C.These water jackets 63A, 63B, 63C respectively become that to pass through cooling water corresponding
The water route in engine 60 flowed around combustion chamber 60A, 60B, 60C of cylinder.Each water jacket 63A, 63B, 63C cooling
Inflow entrance 64A, 64B, 64C of water are respectively arranged on cylinder block 61.Moreover, the flow export of each water jacket 63A, 63B, 63C cooling water
65A, 65B, 65C are respectively arranged on cylinder cover 62.
The engine cooling apparatus of present embodiment, which possesses, makes cooling water be followed by above-mentioned 3 water jackets 63A, 63B, 63C
The chilled(cooling) water return (CWR) of ring.Mechanical water pump 68 is provided with the chilled(cooling) water return (CWR), the mechanical water pump 68 possesses 1 suction inlet
66 and 3 ejiction opening 67A, 67B, 67C corresponding with above-mentioned 3 water jackets 63A, 63B, 63C difference.Water pump 68 is defeated by engine
The rotation of shaft is driven, and the cooling water sucked from suction inlet 66 sprayed respectively from each ejiction opening 67A, 67B, 67C.Water pump 68
Each ejiction opening 67A, 67B, 67C by link water route 69A, 69B, 69C and with respective corresponding water jacket 63A, 63B, 63C
Inflow entrance 64A, 64B, 64C link respectively.
On the other hand, discharge water route is linked with respectively in each water jacket 63A, 63B, 63C each flow export 65A, 65B, 65C
70A、70B、70C.Each discharge water route 70A, 70B, 70C downstream connect after the interflow of merging part 71 with water shut-down mechanism 72
Connect.Backflow water route 74 is connected with water shut-down mechanism 72, the backflow water route 74 is provided with radiator 73, the backflow water route 74 in midway
Downstream be connected with the suction inlet 66 of water pump 68.Water shut-down mechanism 72 is by from merging part 71 to the cooling water in backflow water route 74
Outflow cut-off, or even will from backflow from merging part 71 to the cooling water of suction inlet 66 separate, thus make by each water jacket 63A,
The circulation of 63B, 63C cooling water stops.In addition, in such chilled(cooling) water return (CWR), backflow water route 74 turns into and suction inlet 66
Connected water route.
In such chilled(cooling) water return (CWR), each water jacket 63A, 63B, 63C downstream are in trip more top than water shut-down mechanism 72
It is interconnected at the merging part 71 of side, stopping in water being capable of shape between each ejiction opening 67A, 67B, 67C of the water pump 68 in control
Into the path for making cooling water to be circulated by water jacket 63A, 63B, 63C.Therefore, the chilled(cooling) water return (CWR) also turns into and can produced
Water stops the construction of the circulation of the cooling water in control as stating.
In the engine cooling apparatus of present embodiment, it is provided with such chilled(cooling) water return (CWR) and links water by above-mentioned 3
Connection water route 75A, 75B, 75C that road 69A, 69B, 69C are connected with the suction inlet 66 of water pump 68 respectively.Each connection water route 75A,
The portion of 75B, 75C downstream of ratio radiator 73 that backflow water route 74 is connected to the end of the corresponding side of suction inlet 66
Point.Above-mentioned connection water route 75A, 75B, 75C and the connection water route set in the engine cooling apparatus of first embodiment
30F, 30S similarly function, generation of the circulation of the cooling water in suppression water stopping control, suppress associated with the generation
The decline of the preheating facilitation effect of engine.
Herein, although only describe multiple embodiments, but the disclosure can lead in the range of its purport is not departed from
Cross the situation that other distinctive modes are embodied self-evident to those skilled in the art.The disclosure is not limited
It is set to the content recorded herein, can be improved in appended claims.
Claims (7)
1. a kind of engine cooling apparatus, it is characterised in that possess：
Water pump, is to be configured to the powered mechanical water pump by the rotation of the output shaft of engine, with suction cooling
The suction inlet of water and the N number of ejiction opening for spraying cooling water, N are more than 2 integer；
N number of water jacket, to be arranged on by way of around the combustion chamber of the engine in the engine, and respectively with it is described
Each ejiction opening correspondence of N number of ejiction opening；
N number of link water route, N number of ejiction opening is linked with the corresponding water jacket respectively；
Merging part, makes the cooling water interflow for having passed through each water jacket of N number of water jacket；
Backflow water route, makes to flow back to the suction inlet in the cooling water that the merging part is collaborated；
Water shut-down mechanism, is configured to the backflow cut-off of the cooling water by the backflow water route has been passed through；And
N number of connection water route, makes N number of link water route be inhaled not via water shut-down mechanism described in N number of water sleeve with described
Entrance is respectively communicated with.
2. engine cooling apparatus according to claim 1, wherein,
N number of connection water route is at the suction side water route interflow being connected with the suction inlet, and the suction side water route has difference
The N number of taking mouth being connected with N number of connection water route, each taking mouth of N number of taking mouth with other taking mouth
Any one taking mouth not just to mode configure.
3. engine cooling apparatus according to claim 1 or 2, wherein,
N number of connection water route is configured to, from the link water route by the connection water route to the suction inlet flow back when
The pressure loss of cooling water is all identical in N number of connection water route.
4. according to engine cooling apparatus according to any one of claims 1 to 3, wherein,
The length and internal diameter for constituting the pipe arrangement in the connection water route are all identical in N number of connection water route.
5. according to engine cooling apparatus according to any one of claims 1 to 4, wherein,
N number of connection water route is configured to, from the link water route by the connection water route to the suction inlet flow back when
When the pressure loss of cooling water from the link water route by suction inlet described in recirculation water road direction described in the water sleeve more than being flowed back
Cooling water the pressure loss.
6. according to engine cooling apparatus according to any one of claims 1 to 5, wherein,
The water route in the cover that chain guard is connected provided with the water pump, N number of link water route and with the suction inlet,
N number of connection water route by by N number of link water route each link water route be connected with water route in the cover it is soft
Pipe is constituted.
7. according to engine cooling apparatus according to any one of claims 1 to 6, wherein,
The engine cooling apparatus is applied to the V-type engine with two banks of cylinder, N number of water jacket be respectively arranged on it is described
Two water jackets of two banks of cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016017345A JP6315001B2 (en) | 2016-02-01 | 2016-02-01 | Engine cooling system |
| JP2016-017345 | 2016-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107023373A true CN107023373A (en) | 2017-08-08 |
| CN107023373B CN107023373B (en) | 2019-03-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710060831.1A Expired - Fee Related CN107023373B (en) | 2016-02-01 | 2017-01-25 | Engine cooling apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10253678B2 (en) |
| JP (1) | JP6315001B2 (en) |
| CN (1) | CN107023373B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410191A (en) * | 2019-09-05 | 2019-11-05 | 广西玉柴机器股份有限公司 | A kind of more water route output water pumps |
| CN111188681A (en) * | 2019-12-31 | 2020-05-22 | 潍柴动力股份有限公司 | Engine cooling system and control method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331652A (en) * | 2018-04-17 | 2018-07-27 | 安徽科凌仪器有限公司 | A kind of engineering machinery quickly cooling device |
| DE102020116359A1 (en) | 2020-06-22 | 2021-12-23 | Man Truck & Bus Se | Device for conveying a coolant |
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| CN111188681A (en) * | 2019-12-31 | 2020-05-22 | 潍柴动力股份有限公司 | Engine cooling system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6315001B2 (en) | 2018-04-25 |
| US10253678B2 (en) | 2019-04-09 |
| JP2017137775A (en) | 2017-08-10 |
| US20170218879A1 (en) | 2017-08-03 |
| CN107023373B (en) | 2019-03-08 |
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